2. They have no driver issues - Since Macs are custom made by Apple to run OSX, it doesnt have any driver issues at all. All the hardware components are Apple certified for top notch performance.
3. Synchronisation - if you own and iPhone or any other Apple device, owning a Mac is going to improve the whole "Apple" experience by a thousand times! It is this synchronisation with its other devices which has convinced many users of the need for a Mac.
4. Support System - Let's face it, Apple's support system is superb. If you ever face any sort of problem with your Mac, support and help is only a phone call or an email away.
5. A class of its own - Apple users are a hallowed species. Only around 2-3% people of the entire planet own Macs and hence the moment you buy one, you are immediately elevated to this supreme class of ultra rich users. This is in contrast to the "everyone is equal" philosophy of Linux and open source softwares.